Comparative Study on Utilization of Waste Cooking Oil in Compression Ignition Engine with Fuel and Engine Modification Techniques

The energy strategy of a country aims at efficiency, and security, providing access that is environmentally friendly and achieving an optimum mix of primary resources for energy generation. The energy produced from the waste could be an area of useful research work. In this research work, the Neat form of waste cooking oil (NWCO) fuel was effectively used in a compression ignition (C.I) engine. A single-cylinder, water-cooled, agricultural type, direct injection CI engine developing a power output of 3.54 kW at 1500 rpm was used throughout the research work. Fuel and Engine Level modification was used in this work. Copper Oxide (CuO) nanomaterial blended with the emulsified form of WCO. In that dual fuel mode, Ethanol was injected into the intake manifold as primary fuel and WCO as pilot fuel. The Ethanol energy share varies from 0 – 40 %. From the experimental results, it was concluded that neat WCO could be utilized for agricultural type CI Engine in a stable emulsified form of NWCO. The improvement in BTE and reduction of smoke emission were achieved by Nano additives blended with the NWCO. Further, the significant improvement of BTE – 31% could be used with a dual fuel mode of operation with 30% of ethanol injection at maximum brake power output. The combined effect of a higher compression ratio and dual fuel mode of operation could help the improvement in BTE and reduction in smoke 35 (opacity) and NO emissions705 ppm with 30% ethanol energy share.